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LakeQuality

Hypereutrophic lakes (TSI above 70) are at the upper end of the productivity scale: visible algal blooms most weeks of summer, clarity often under 3 feet, and meaningful risk of harmful-algal-bloom toxin events. 7 hypereutrophic lakes are on the Virginia books. Almost none of them are deep — 0% break 50 feet. Shallow basin plus heavy nutrient input is the consistent recipe.

Hypereutrophic lakes overwhelmingly grade D or F — the trophic class and the grade are measuring closely-related dimensions of the same underlying nutrient regime.

#LakeCountyGradeClarityDepthTSI
1Ut To Chk LakeHanoverD--73
2Bryants PondSussexD--80
3Near Dam LakeCumberlandF2.1 ft-65
4Station LakeVirginia Beach cityF1.3 ft-76
5Swift Creek Lake StaChesterfieldF1.6 ft-66
6Sta LakeVirginia Beach cityF1 ft-76
7Upper Branch of Terry'S Run LakeSpotsylvaniaF0.7 ft-74

Source: EPA National Aquatic Resource Surveys, 2026.